Thank you for your comments, Anne. Serving sizes have been set by Health Canada and is based on the density of the food. A denser food will have a larger serving size because it is a better representation of the amount you would normally eat. For example, one cup of a dense cereal like Mini-Wheats will weigh more than one cup of a less dense cereal like Corn Flakes. Size is measured according to household measurements (cups) rather than grams. Should you have additional questions, please feel free to reach out to us. We’re happy to help!